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Boiler & hot water

Boiler Breakdown? No Hot Water? — Emergency Help in Southampton

Cold showers and a dead boiler can't wait. We diagnose the fault fast and get you moving again — no hot water and no heating are always treated as top priority, across Southampton.

Common failures we fix

Whatever your boiler is doing, or not doing, here are the faults we see most. Water-side problems are far more common than gas-side ones. Thus, most turn out to be quicker fixes than people expect.

No hot water, but heating works

Often a diverter valve, airlock, or a cylinder-side fault rather than the boiler itself — we trace it properly instead of guessing.

Boiler on, but water runs cold

Can point to a failed heat exchanger, valve, or sensor. We check the water-side components before anything else.

Leaking boiler or pipework

Water pooling near the boiler or dripping from pipework needs isolating fast to prevent damage to floors and ceilings below.

Pressure keeps dropping

A boiler that won't hold pressure usually means a leak somewhere in the system — we find where it's escaping.

Banging, kettling or gurgling

Often limescale or sludge build-up restricting flow. Left alone, it puts extra strain on the whole heating system.

Plumber or Gas Safe engineer? Here's the honest answer

What we handle

We handle the water side of your heating system. That covers leaks, dropped pressure, and faulty pumps. It also covers hot water cylinders, immersion heaters, valves and pipework. Because most "boiler problems" turn out to be issues here, not the boiler itself, we check this side first.

What needs a Gas Safe engineer

Gas-side work is only ever done by a Gas Safe registered engineer. That covers burners, gas valves, flues, and the boiler's internal gas components. We won't touch gas-side work ourselves. We'll always tell you plainly when that's what's needed.

Hot water cylinders & immersion heaters

If your heating works but hot water doesn't, the cylinder is often the real culprit. Because of that, we check cylinder valves, thermostats and coils for faults. We also repair or replace immersion heaters when they've failed. That covers a full loss of hot water, or water that won't get properly hot.

Before you call: quick checks

A minute of checking can save a call-out. If in doubt, just get in touch. Since these faults are common and safe to check yourself, it's always worth ruling them out first.

Check the pressure gauge

Most system boilers should read between 1 and 1.5 bar when cold. Well below that, and low pressure is likely your problem.

Check the thermostat

Confirm the room thermostat and any timer are calling for heat, and batteries aren't flat if it's wireless.

Check the fuse and switch

A tripped fuse or a boiler isolation switch left off will stop a perfectly healthy boiler from firing at all.

Frequently asked questions

Why is my boiler on but no hot water?

This is usually a water-side fault, not the boiler's gas components. It could be a stuck diverter valve, an airlock, or a problem with the hot water cylinder. We check these first. They're the most common cause, and they don't need Gas Safe work.

Do I need a plumber or a Gas Safe engineer?

If the fault is water-side — leaks, pressure, pumps, cylinders, immersion heaters — that's plumbing work we handle directly. If it's gas-side — burners, gas valves, flues — that's different. It's only ever done by a Gas Safe registered engineer. We'll be upfront about which one your problem needs.

Why does my boiler keep losing pressure?

Persistent pressure loss almost always means water is escaping somewhere in the system. It could be a weeping valve or a pinhole leak in pipework. Or it could be a fault at the pressure relief valve. Topping up the pressure repeatedly, without finding the leak, just delays the same problem.

No hot water can't wait

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